Plow.



P. MGNAUGHTON/ PLOW.

(A aplication filed Oct. 1, 1900.)

(No Model.)

m: Moms PETERS $0.. PHOTO-LITNQ, wrsumomu, o. c.

Patented Dec UNITED" STATES PATENT OFFICE.

PETER MONAUGHTON, CHARLOTTE, MICHIGAN.

PLOW.

SPECIFICATION forming part of Letters Patent No. 663,977, dated December18, 1900.

To aZZ whom, it may concern: 7 Be it known that '1, PETER MONAUGHTON, acitizen of the United States,residing at Charlotte,in the county ofEaton and State of Michigan, have invented a new and useful Plow, ofwhich the following is'a specification.

My invention is an improved plow, and relates particularly to the beamand to means for adjusting the same so that its front .end may be raisedand lowered. and for securing the beam at any desired adjustment,thereby enabling thevplow to'be used ine'ithe'r hard or soft ground andto be run at any desired depth in the soil.- V

My invention consists in the peculiar construction and combination ofdevices herein after fully set forth and pointed out in the claims. V

In the accompanying drawings, Figure 1 is an elevation of a plowembodying my i mprovements, a portion of the moldboard and one of thehandles being removed. Fig. 2 is a detail view of the same, partly insection, on the plane indicated by the line an. of Fig. 1. Fig. 3 is adetail perspective view of the locking and adjusting cam.

In theembodiment of my inventionhere shown the beam 1 of the plow iscurved in the usual manner and formed integrally with the standard 2,which standard bears against the inner side of the landside-plate 3 ofthe plow and is pivotally connected thereto by a bolt 4, which passestransversely through an opening in the heel of the standard and issecured in the opening in the landside-plat-e. The latter is furtherprovided with an adjustingslot 5, which is curved and is concentric withthe axis of the pivotal bolt 4. A- bolt 6 is disposed in an opening inthe said standard which registers with said slot 5, and said boltoperates in'said slot and is provided with the usual tap or nut 7, bymeans of which the beam may be set at any desired adjustment. A disk 8is journaled 011 a bolt 9'and bears against the rear side of thestandard or down turned rear portion of the beam, the said disk beingadapted to be partly rotated on the said bolt 9, and the said disk isprovided on its front side with a cam 10, the front side of whichiscurved and is eccentrically disposed on the disk. The shape of the saidcam is such that the front portion of the disk forms Application filedober 1, 1900. serial No. 31,700. (No model.)

a wedge which bears against the rear side of the standard or downturnedrear portion of the, beam, relieves the adj listing-bolt 6 of strain,and supportsthe said beam when adjusted. Prior to the adjustment of thebeam the same maybe predetermined by turning the disk 8 to the requisiteextent, the bolt 6 being tightened after the beam has been ad It will beunderstood that the ad-.

justed. justing-bolt 6 and cam-disk 8 coact to set and hold or retainthe beam at any required adjustment. It will be observed by referenceto'the drawings that the front side of the disk 8, by reason of itsbeing provided with the cam 10, is heavier than the rear side thereofand that the cam tends by gravity to work downward against the rear sideof the standard or downturned rear portion of the beam, and hence tocounteract any tendency of the bolt 6 to work loose. j

I do not desire to limit myself to the precise construction an dcombination of devices here in shown and described, as modifications maybe made therein without departing from the spirit of my invention.

While the cam forms a wedge that bears against the rear side of thestandard portion of the beam, another form of wedge might be employed inlieu of the cam for the same purpose, as is evident. Other suitablemeans may,within the scope of my invention, be employed to brace thestandard and relieve the adjusting-bolt of stress, and I do not limitmyself inthis particular.

. Having thus described my invention, I claim- 1. The combination of aplow having an adjusting-slot, a beam having its standard portionpivoted to the plow so that the front end of the beam may be raised andlowered, an adj usting-bolt transversely disposed in said beam andworking in said slot, and a revoluble disk mounted in rear of thebeam-standard and having an eccentrically-disposed cam on its front sidebearing against the rear side of the standard portion of the beam, saidcamdisk and adj Listing-bolt coacting to secure the beamat any requiredadjustment, and said cam disk relieving said adjustingbolt of stress,substantially as described.

2. The combination of a plow, a beam pivoted thereto, and therebyrendered capable of adjustment so that the front end of the beam may beraised and lowered, an adjust-- ing-bolt, extending transversely throughthe standard portion of the beam and through the plow, and acam bearingagainst the rear side of the standard portion of the beam, said cam andbolt eoaeting to secure and adjust the beam, and said cam relieving saidadjusting-bolt of stress, substantially as described.

3. The combination of a plow, a standard pivoted thereto, for thepurpose set forth, an

adjusting-bolt transversely disposed in the plow and standard andconnecting the same together, and acam bearing against the rear side ofthe standard and relieving the said

